[R] Help with if statements

[Amit Patel]

Hi 
I am trying to create a column in a data frame which gives a sigificane score from 0-7. It should read values from 7 different colums and add 1 to the counter if the value is <=0.05. I get an error message saying 

Error in if (ALLRESULTS[i, 16] <= 0.05) significance_count = significance_count +  : 
  missing value where TRUE/FALSE needed

The script is included below

it works if i convert the NA values to zero but this is not appropriate as it includes the zero as significant. 

ANY SUGGESTIONS



#SCRIPT STARTS
for (i in 1:length(ALLRESULTS[,1])) {
significance_count = 0

if (ALLRESULTS[i,16] <= 0.05 )  significance_count = significance_count +1 else significance_count = significance_count
if (ALLRESULTS[i,17] <= 0.05 )  significance_count = significance_count +1 else significance_count = significance_count
if (ALLRESULTS[i,18] <= 0.05 )  significance_count = significance_count +1 else significance_count = significance_count
if (ALLRESULTS[i,19] <= 0.05 )  significance_count = significance_count +1 else significance_count = significance_count
if (ALLRESULTS[i,20] <= 0.05 )  significance_count = significance_count +1 else significance_count = significance_count
if (ALLRESULTS[i,21] <= 0.05 )  significance_count = significance_count +1 else significance_count = significance_count
if (ALLRESULTS[i,22] <= 0.05 )  significance_count = significance_count +1 else significance_count = significance_count

ALLRESULTS[i,23] <- significance_count}